Buggy code:
public abstract class SolrQueryParserBase { static final int CONJ_NONE = 0 ; static final int CONJ_AND = 1 ; static final int CONJ_OR = 2 ; static final int MOD_NONE = 0 ; static final int MOD_NOT = 10 ; static final int MOD_REQ = 11 ; public static final Operator AND_OPERATOR = Operator . AND ; public static final Operator OR_OPERATOR = Operator . OR ; Operator operator = SolrQueryParserBase . OR_OPERATOR ; RewriteMethod multiTermRewriteMethod = MultiTermQuery . CONSTANT_SCORE_AUTO_REWRITE_DEFAULT ; boolean allowLeadingWildcard = true ; boolean enablePositionIncrements = true ; String defaultField ; int phraseSlop = 0 ; float fuzzyMinSim = FuzzyQuery . defaultMinSimilarity ; int fuzzyPrefixLength = FuzzyQuery . defaultPrefixLength ; boolean autoGeneratePhraseQueries = false ; protected IndexSchema schema ; protected QParser parser ; protected Analyzer analyzer ; private Map < FieldType , ReversedWildcardFilterFactory > leadingWildcards ; public static enum MagicFieldName { VAL ( "_val_" , "func" ) , QUERY ( "_query_" , null ) ; public final String field ; public final String subParser ; MagicFieldName ( final String field , final String subParser ) { } @ Override public String toString ( ) { } private static final Map < String , SolrQueryParserBase . MagicFieldName > lookup = new HashMap < String , SolrQueryParserBase . MagicFieldName > ( ) ; public static SolrQueryParserBase . MagicFieldName get ( final String field ) { } } protected SolrQueryParserBase ( ) { } public abstract void ReInit ( CharStream stream ) { } public abstract Query TopLevelQuery ( String field ) throws ParseException , SyntaxError { } public void init ( Version matchVersion , String defaultField , QParser parser ) { } public Query parse ( String query ) throws SyntaxError { } public String getDefaultField ( ) { } protected String explicitField ; public String getField ( String fieldName ) { } public String getExplicitField ( ) { } public final boolean getAutoGeneratePhraseQueries ( ) { } public final void setAutoGeneratePhraseQueries ( boolean value ) { } public float getFuzzyMinSim ( ) { } public void setFuzzyMinSim ( float fuzzyMinSim ) { } public int getFuzzyPrefixLength ( ) { } public void setFuzzyPrefixLength ( int fuzzyPrefixLength ) { } public void setPhraseSlop ( int phraseSlop ) { } public int getPhraseSlop ( ) { } public void setAllowLeadingWildcard ( boolean allowLeadingWildcard ) { } public boolean getAllowLeadingWildcard ( ) { } public void setEnablePositionIncrements ( boolean enable ) { } public boolean getEnablePositionIncrements ( ) { } public void setDefaultOperator ( Operator op ) { } public Operator getDefaultOperator ( ) { } public void setMultiTermRewriteMethod ( MultiTermQuery . RewriteMethod method ) { } public RewriteMethod getMultiTermRewriteMethod ( ) { } protected void addClause ( List < BooleanClause > clauses , int conj , int mods , Query q ) { } protected Query newFieldQuery ( Analyzer analyzer , String field , String queryText , boolean quoted ) throws SyntaxError { TokenStream source ; try { <START_BUG> source = analyzer . tokenStream ( field , new StringReader ( queryText ) ) ; <END_BUG> source . reset ( ) ; } catch ( IOException e ) { throw new SyntaxError ( "Unable<seq2seq4repair_space>to<seq2seq4repair_space>initialize<seq2seq4repair_space>TokenStream<seq2seq4repair_space>to<seq2seq4repair_space>analyze<seq2seq4repair_space>query<seq2seq4repair_space>text" , e ) ; } CachingTokenFilter buffer = new CachingTokenFilter ( source ) ; TermToBytesRefAttribute termAtt = null ; PositionIncrementAttribute posIncrAtt = null ; int numTokens = 0 ; buffer . reset ( ) ; if ( buffer . hasAttribute ( TermToBytesRefAttribute . class ) ) { termAtt = buffer . getAttribute ( TermToBytesRefAttribute . class ) ; } if ( buffer . hasAttribute ( PositionIncrementAttribute . class ) ) { posIncrAtt = buffer . getAttribute ( PositionIncrementAttribute . class ) ; } int positionCount = 0 ; boolean severalTokensAtSamePosition = false ; boolean hasMoreTokens = false ; if ( termAtt != null ) { try { hasMoreTokens = buffer . incrementToken ( ) ; while ( hasMoreTokens ) { numTokens ++ ; int positionIncrement = ( posIncrAtt != null ) ? posIncrAtt . getPositionIncrement ( ) : 1 ; if ( positionIncrement != 0 ) { positionCount += positionIncrement ; } else { severalTokensAtSamePosition = true ; } hasMoreTokens = buffer . incrementToken ( ) ; } } catch ( IOException e ) { } } try { buffer . reset ( ) ; source . close ( ) ; } catch ( IOException e ) { throw new SyntaxError ( "Cannot<seq2seq4repair_space>close<seq2seq4repair_space>TokenStream<seq2seq4repair_space>analyzing<seq2seq4repair_space>query<seq2seq4repair_space>text" , e ) ; } BytesRef bytes = ( termAtt == null ) ? null : termAtt . getBytesRef ( ) ; if ( numTokens == 0 ) return null ; else if ( numTokens == 1 ) { try { boolean hasNext = buffer . incrementToken ( ) ; assert hasNext == true ; termAtt . fillBytesRef ( ) ; } catch ( IOException e ) { } return newTermQuery ( new Term ( field , BytesRef . deepCopyOf ( bytes ) ) ) ; } else { if ( severalTokensAtSamePosition || ( ( ! quoted ) && ( ! ( autoGeneratePhraseQueries ) ) ) ) { if ( ( positionCount == 1 ) || ( ( ! quoted ) && ( ! ( autoGeneratePhraseQueries ) ) ) ) { BooleanQuery q = newBooleanQuery ( ( positionCount == 1 ) ) ; BooleanClause . Occur occur = ( ( positionCount > 1 ) && ( ( operator ) == ( SolrQueryParserBase . AND_OPERATOR ) ) ) ? Occur . MUST : Occur . SHOULD ; for ( int i = 0 ; i < numTokens ; i ++ ) { try { boolean hasNext = buffer . incrementToken ( ) ; assert hasNext == true ; termAtt . fillBytesRef ( ) ; } catch ( IOException e ) { } Query currentQuery = newTermQuery ( new Term ( field , BytesRef . deepCopyOf ( bytes ) ) ) ; q . add ( currentQuery , occur ) ; } return q ; } else { MultiPhraseQuery mpq = newMultiPhraseQuery ( ) ; mpq . setSlop ( phraseSlop ) ;

Fix:
source = analyzer . tokenStream ( field , queryText ) ;